Evolution

It is generally accepted that the astonishing diversity of life on our planet is the result of a process called evolution, which drives organisms to change gradually over time. While the basic concept of organisms evolving is not a difficult one, understanding how evolution works, and how evolutionary theory was developed, is more complex.

Why did sexual reproduction evolve? And why is it so widespread? Watch the animation to explore one of the most popular theories for why sex is so successful and discover what advantage it offers over asexual reproduction.